Support construction for electrical appliances



Aug. 7, 192a. 1,679,799

v n. N. THOMPSON SUPPORT CONSTRUCTION FOR ELECTRICAL APTLIANCES I FiledMay 9, 1924 A TTORNEYS Patented Aug. 7, 1928.

UNITED STATES PATENT OFFICE.

non N. THOMPSON, or SYRACUSE, new YORK, ASSIGNOR TO PASS & SEYMOUR, me,or V SOLVAY, NEW YORK, CORPORATION OF NEW YORK.

surron'r CONSTRUCTION non ELECTRICAL APPLIANCES.

Application filed May 9,

This invention has for, its object a par ticularly simple, light andstrong construction of supports for electrical appliances, as

lamp sockets, etc., by which the sockets or other appliances areconnected to a support ing fixture, or to any other su port. Theinvention consists in the novel eatures and in the combinations andconstructions hereinafter set forth and claimed.

In describing this invention reference is had to the accompanyingdrawings, in which like characters designate corresponding parts in allthe views. I

Figure 1. s a sectional view, partly in elevation, of a lamp socketsupport embodying this invention.

Figure 2 is an inner face View of the support, the contiguous portion ofthe casing being also shown.

Figure 3 is a detail View of the ring to which the appliance is attachedby screws.

Figure 4 is a detail sectional view partly broken away of the ringmember and nipple.

This support comprises generally a nipple,

a ring member 1 to which the appliance 1s secured, the ring memberhaving means for interlocking with the nipple to prevent relativeturning of the nipple and the ring.

2 is the nipple, it being usually internally threaded for receiving athreaded supporting fixture or for receiving a bushing through which thefeed wires pass, the nipple having a peripheral groove 3 at its innerend, and a notch 4 which intersects the groove.

' 5 is the ring member interlocked with the nipple, it having its inneredge or margin located in the groove 3, and having a tongue 6 whichextends into the notch 4. The ring member 5 is usually flat. As hereillustrated the nipple is formed with a reduced portion or lip 7 in itsinner end, and the margin of this reduced portion or lip is 1924. SerialNo. 712,032.

spread or spun over at 7 on the lower face of the ring, and thus formsthe groove 3.

Usually in lamp socket constructions the ring member is covered by anannular convex sheet metal plate A,'formed with an an nular shoulder at8 against which the outer margin of the ring 5 abuts, and the innerupper edge of the sheet thrusts against an annular peripheral shoulder9on the nipple. The ring member 5 is also formed with one or morethreaded openings 10, which receive the screws 11, by which the lampsocket or the base 12 thereof is secured to the cap.

Owing to the tongues 4 interlocking with the nipple, turning of thesocket or other appliances and the ring member 5, relatively totlie'nipple is prevented and hence twisting of the feed wires nipple,and breaking o the joints between the feed wires and the wire terminalsof the lamp socket is prevented.

What I claim is:

Asupport constructionfor electrical appliances comprising a nippleformed with an annular, peripheral groove at its inner end, and with anotch intersecting the groove, and also with a shoulder above and spacedfrom the groove, a ring member having its inner margin extending intothe groove of the nipple and a tongue extending into the notch, the ringmember being formed with threaded openings for receiving the fasteningscrews of the appliance, a sheet metal shell in the form of a canopyhaving its upper end thrusting against said shoulder and being formedbetween its ends with a shoulder thrusting against the upper face of thering member.

In testimony whereof, I have hereunto signed my name at Syracuse, in thecounty passing through the of Onondaga, and State of New York, this 1stday of May, 1924.

DON N. THOMPSON.

